*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    /* Paleta principala */
    --c1: #003399;
    --c2: #4655C2;
    --c3: #7379EC;
    --c4: #9F9FFF;
    --c5: #CAC8FF;

    --bg: #f0f0ff;
    --surface: #ffffff;
    --surface2: #f7f7fe;
    --border: #e0e0f5;
    --border2: #c8c8f0;
    --text: #0a0a2e;
    --text2: #4655C2;
    --text3: #9F9FFF;
    --accent: #4655C2;
    --accent-dark: #003399;
    --accent-bg: #efefff;
    --accent-border: #CAC8FF;
    --green: #16a34a;
    --green-bg: #f0fdf4;
    --green-border: #bbf7d0;
    --amber: #d97706;
    --amber-bg: #fffbeb;
    --amber-border: #fde68a;
    --red: #dc2626;
    --radius: 12px;
    --radius-sm: 8px;
    --shadow: 0 1px 4px rgba(0, 51, 153, 0.08), 0 1px 2px rgba(0, 51, 153, 0.04);
    --shadow-md: 0 4px 20px rgba(0, 51, 153, 0.12), 0 2px 6px rgba(0, 51, 153, 0.06);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg);
    color: var(--text);
    font-size: 14px;
    line-height: 1.5;
    min-height: 100vh;
    padding: 24px 16px;
}

.page-header {
    text-align: center;
    margin-bottom: 28px;
    padding: 28px 20px 24px;
    background: linear-gradient(135deg, var(--c1) 0%, var(--c2) 60%, var(--c3) 100%);
    border-radius: var(--radius);
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
    margin-bottom: 24px;
    box-shadow: var(--shadow-md);
}

.page-header h1 {
    font-size: 24px;
    font-weight: 700;
    color: #ffffff;
    letter-spacing: -0.3px;
}

.page-header p {
    color: var(--c5);
    font-size: 13px;
    margin-top: 5px;
}

.layout {
    max-width: 900px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

@media (max-width: 720px) {
    .layout {
        grid-template-columns: 1fr;
    }
}

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.card-header {
    padding: 14px 18px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: linear-gradient(90deg, var(--c1) 0%, var(--c2) 100%);
    border-radius: var(--radius) var(--radius) 0 0;
}

.card-header h2 {
    font-size: 13px;
    font-weight: 600;
    color: #ffffff;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.card-body {
    padding: 18px;
}

.field {
    margin-bottom: 14px;
}

.field:last-child {
    margin-bottom: 0;
}

label.field-label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    color: var(--c2);
    margin-bottom: 5px;
    text-transform: uppercase;
    letter-spacing: 0.4px;
}

select, input[type="number"], input[type="text"] {
    width: 100%;
    padding: 8px 10px;
    border: 1px solid var(--border2);
    border-radius: var(--radius-sm);
    font-size: 13px;
    color: var(--text);
    background: var(--surface);
    appearance: none;
    -webkit-appearance: none;
    transition: border-color 0.15s;
    outline: none;
}

select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%234655C2' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 10px center;
    padding-right: 30px;
}

select:focus, input:focus {
    border-color: var(--c3);
    box-shadow: 0 0 0 3px rgba(115, 121, 236, 0.18);
}

.radio-row {
    display: flex;
    gap: 4px;
    flex-wrap: wrap;
}

.radio-btn {
    flex: 1;
    min-width: 80px;
}

.radio-btn input[type="radio"] {
    display: none;
}

.radio-btn label {
    display: block;
    text-align: center;
    padding: 7px 10px;
    border: 1px solid var(--border2);
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 500;
    color: var(--text2);
    cursor: pointer;
    transition: all 0.15s;
    user-select: none;
}

.radio-btn input[type="radio"]:checked + label {
    background: var(--accent-bg);
    border-color: var(--c2);
    color: var(--c1);
    font-weight: 600;
}

.radio-btn input[type="radio"]:disabled + label {
    background: #f0f0f5;
    border: 1px dashed #c0c0d0;
    color: #a0a0b0;
    cursor: not-allowed;
    text-decoration: line-through;
    text-decoration-color: #a0a0b0;
    opacity: 0.65;
}

.radio-btn input[type="radio"]:disabled + label::after {
    content: " N/A";
    font-size: 10px;
    display: inline-block;
    text-decoration: none;
    vertical-align: middle;
    font-weight: 600;
    letter-spacing: 0.5px;
}

.check-row {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 10px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background 0.15s;
}

.check-row:hover {
    background: var(--surface2);
}

.check-row input[type="checkbox"] {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
    cursor: pointer;
}

.check-row span {
    font-size: 13px;
    color: var(--text);
}

.section-divider {
    height: 1px;
    background: var(--border);
    margin: 16px 0;
}

.subsection {
    background: var(--surface2);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    border-left: 3px solid var(--c3);
    padding: 14px;
    margin-bottom: 12px;
}

.subsection h3 {
    font-size: 12px;
    font-weight: 600;
    color: var(--c2);
    text-transform: uppercase;
    letter-spacing: 0.4px;
    margin-bottom: 12px;
}

.tva-badge {
    display: inline-block;
    padding: 2px 8px;
    background: var(--amber-bg);
    border: 1px solid var(--amber-border);
    border-radius: 20px;
    font-size: 11px;
    font-weight: 500;
    color: var(--amber);
    margin-top: 4px;
}

.tva-badge.hidden {
    display: none;
}

.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.btn-primary {
    width: 100%;
    padding: 12px;
    background: linear-gradient(90deg, var(--c1) 0%, var(--c2) 100%);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    letter-spacing: 0.3px;
    transition: opacity 0.15s, transform 0.1s;
    margin-top: 4px;
    box-shadow: 0 2px 8px rgba(0, 51, 153, 0.25);
}

.btn-primary:hover {
    opacity: 0.92;
}

.btn-primary:active {
    transform: scale(0.99);
}

.btn-secondary {
    padding: 7px 14px;
    background: rgba(255, 255, 255, 0.15);
    color: #ffffff;
    border: 1px solid rgba(255, 255, 255, 0.35);
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.25);
    color: #ffffff;
}

.btn-save {
    padding: 7px 14px;
    background: var(--green);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.15s;
}

.btn-save:hover {
    background: #15803d;
}

.btn-danger {
    padding: 7px 14px;
    background: var(--red);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
}

.result-area {
    min-height: 200px;
}

.result-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
    color: var(--c4);
    text-align: center;
    gap: 8px;
}

.result-placeholder svg {
    opacity: 0.5;
    color: var(--c3);
}

.result-placeholder p {
    font-size: 13px;
    color: var(--text3);
}

.result-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

.result-table th {
    background: var(--c1);
    padding: 8px 10px;
    text-align: left;
    font-size: 11px;
    font-weight: 600;
    color: var(--c5);
    text-transform: uppercase;
    letter-spacing: 0.4px;
    border-bottom: 1px solid var(--border);
}

.result-table td {
    padding: 8px 10px;
    border-bottom: 1px solid var(--border);
    color: var(--text);
}

.result-table tr:last-child td {
    border-bottom: none;
}

.result-table td:nth-child(2), .result-table td:nth-child(3), .result-table td:nth-child(4) {
    text-align: right;
    font-variant-numeric: tabular-nums;
}

.result-table th:nth-child(2), .result-table th:nth-child(3), .result-table th:nth-child(4) {
    text-align: right;
}

.total-row {
    margin-top: 12px;
    padding: 12px 14px;
    background: var(--green-bg);
    border: 1px solid var(--green-border);
    border-radius: var(--radius-sm);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.total-row span {
    font-size: 12px;
    font-weight: 500;
    color: var(--green);
}

.total-row strong {
    font-size: 18px;
    font-weight: 700;
    color: var(--green);
}

.subtotal-row {
    margin-top: 8px;
    padding: 8px 14px;
    background: var(--surface2);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    color: var(--text2);
}

.info-box {
    margin-top: 10px;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    font-size: 12px;
    line-height: 1.6;
}

.info-box.blue {
    background: var(--accent-bg);
    border: 1px solid var(--c5);
    color: var(--c1);
}

.info-box.amber {
    background: var(--amber-bg);
    border: 1px solid var(--amber-border);
    color: #92400e;
}

.info-box strong {
    display: block;
    font-weight: 600;
    margin-bottom: 4px;
}

/* MODAL */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.45);
    z-index: 1000;
    align-items: flex-start;
    justify-content: center;
    padding: 24px 16px;
    overflow-y: auto;
}

.modal-overlay.open {
    display: flex;
}

.modal {
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    width: 100%;
    max-width: 680px;
    margin: auto;
}

.modal-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: linear-gradient(90deg, var(--c1) 0%, var(--c2) 100%);
    border-radius: var(--radius) var(--radius) 0 0;
}

.modal-header h2 {
    font-size: 15px;
    font-weight: 600;
    color: #ffffff;
}

.modal-close {
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    cursor: pointer;
    font-size: 18px;
    color: #ffffff;
    line-height: 1;
    padding: 2px 7px;
    transition: background 0.15s;
}

.modal-close:hover {
    background: rgba(255, 255, 255, 0.25);
}

.modal-body {
    padding: 20px;
    max-height: 70vh;
    overflow-y: auto;
}

.modal-footer {
    padding: 14px 20px;
    border-top: 1px solid var(--border);
    display: flex;
    gap: 8px;
    justify-content: flex-end;
}

.price-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
    margin-bottom: 20px;
}

.price-table th {
    background: var(--accent-bg);
    padding: 8px 10px;
    text-align: left;
    font-size: 11px;
    font-weight: 600;
    color: var(--c1);
    text-transform: uppercase;
    border-bottom: 2px solid var(--c5);
}

.price-table td {
    padding: 6px 10px;
    border-bottom: 1px solid var(--border);
}

.price-table td input {
    width: 80px;
    padding: 4px 6px;
    font-size: 12px;
    text-align: right;
}

.price-section-title {
    font-size: 12px;
    font-weight: 600;
    color: var(--c1);
    text-transform: uppercase;
    letter-spacing: 0.4px;
    padding: 12px 0 6px;
    border-bottom: 2px solid var(--c4);
    margin-bottom: 8px;
}

.save-notice {
    display: none;
    padding: 8px 12px;
    background: var(--green-bg);
    border: 1px solid var(--green-border);
    border-radius: var(--radius-sm);
    font-size: 12px;
    color: var(--green);
    font-weight: 500;
    margin-top: 8px;
}

.full-width {
    grid-column: 1 / -1;
}

.hidden {
    display: none !important;
}

.site-footer {
    max-width: 900px;
    margin: 24px auto 0;
    padding: 20px 0 8px;
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.site-footer__credit {
    font-size: 12px;
    color: var(--text3);
    letter-spacing: 0.2px;
}

.site-footer__link {
    display: flex;
    align-items: center;
    opacity: 0.7;
    transition: opacity 0.15s;
}

.site-footer__link:hover {
    opacity: 1;
}